This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Need for Fitness-For-Purpose in the Assessment of Weld Discontinuities
Annotation ability available
Sector:
Language:
English
Abstract
The use of fitness-for-purpose for the assessment of weld discontinuities has become well established in the offshore and other industries. For applications within the automotive industry it will not generally be cost-effective to perform fracture mechanics analyses to assess weld discontinuities detected during inspection on an individual basis. However, it is feasible to use the same techniques to set quality assurance levels for automotive structures. Acceptance levels for weld discontinuities may be established in a global analysis for the whole structure, taking into consideration the proximity of different types of weld detail and that the levels of cyclic stress will vary throughout the structure.
Authors
Topic
Citation
Wylde, J., "The Need for Fitness-For-Purpose in the Assessment of Weld Discontinuities," SAE Technical Paper 880819, 1988, https://doi.org/10.4271/880819.Also In
References
- Fuchs, E. ‘Quality in welding’ Brit. Weld. J. 8 1 602 1961
- Harrison, J.D. ‘The economics of a fitness-for-purpose approach to weld defect acceptance’ Fitness for Purpose Validation of Welded Constructions. Int. Conf. London 1982
- Rooke, D.P. Cartwright, D.J ‘Compendium of stress intensity factors’ HMSO 1976
- Tada, H. Paris, P. Irwin, G. The stress analysis of cracks handbook Del. Research Corpn. Pennsylvania, U.S.A. 1973
- Smith, I.J. Hurworth, S.J. ‘The effect of geometry changes upon the predicted fatigue strength of welded joints’ The Welding Institute Res. Report. No. 244/1981
- Wylde, J.G. ‘The influence of residual stresses on the fatigue design of welded joints’ Residual Stress in Design, Process and Materials Selection ASM Int. 1987
- Maddox, S.J. Fatigue crack propagation data obtained from parent plate, weld metal and HAZ in structural steels W. Res. Int. 1974 4 36
- Harrison, J.D. ‘The basis for an acceptance standard for weld defects. Part 1: Porosity Met. Con. 4 3 March 1972 99 103
- Harrison, J.D. ‘The basis for an acceptance standard for weld defects. Part 2: Slag Inclusions Met. Con. 4 7 July 1972 262 268
- British Standard Published Document PD 6493 “Guidance on some methods for the derivation of acceptance levels for defects in fusion welded joints”
- Maddox, S.J. ‘Fitness-for-purpose assessment of misalignment in transverse butt welds subject to fatigue loading’ The Welding Institute Res. Rep. 279/1985
- Gurney, T.R. ‘Fatigue design rules for welded steel joints’ Welding Institute Research Bulletin 17 1976
- Maddox, S.J. ‘A fracture mechanics analysis of fatigue cracks in fillet welded joints’ Int. J. Frac. 11 2 1975 221